function(build_implib name)
  set(name_ex ${name}_ex)
  add_custom_target(${name_ex}lib ALL DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/lib${name_ex}.a)
  add_custom_command(
    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/lib${name_ex}.a
    COMMAND ${CMAKE_DLLTOOL} -d ${CMAKE_CURRENT_SOURCE_DIR}/Defs/${name}.def -k -l lib${name_ex}.a
    COMMENT "Building lib${name_ex}.a"
  )

  add_library(${name_ex} SHARED IMPORTED)
  set_property(TARGET ${name_ex} PROPERTY IMPORTED_IMPLIB ${CMAKE_CURRENT_BINARY_DIR}/lib${name_ex}.a)
  add_dependencies(${name_ex} ${name_ex}lib)
endfunction()

build_implib(ntdll)
build_implib(wow64)

add_subdirectory(Common)

if (_M_ARM_64)
  add_subdirectory(WOW64)
endif()
